This Part Fits the following kits / parts:

#101785 - 5MM HEX WHEEL ADAPTERS TROPHY BUGGY (ORANGE/BLACK)

TROPHY SERIES

Narrow the track width of your Trophy Truggy with these optional
5mm hex adapters. Narrowing the width can help fine-tune the
handling balance of your buggy. These are the stock hex adapters
for the Trophy Buggy.

Can also be used to upgrade the Trophy Truggy to 17mm hex
adapters! Use these parts in combination to upgrade the
driveshafts to universal dogbones and change the threaded axles to
17mm hexes! #66479 Universal Joint
#101061 Rear Wheel Axle 2 x #101785 or #101792 Wheel Hex Adapter With these parts
you will be able to use standard truggy wheels on your Trophy
Truggy!